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Thermally Stimulated Depolarization of AsO 2 − Centres in Alkali Halide Crystals
Author(s) -
Pilatus U.,
Fischer F.
Publication year - 1983
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221180126
Subject(s) - halide , alkali metal , dipole , annealing (glass) , chemistry , ionic bonding , depolarization , crystallography , materials science , inorganic chemistry , ion , medicine , organic chemistry , composite material , endocrinology
Abstract A TSD band below LNT attributed to the AsO 2 −centre is observed in several alkali halide crystals. In KI:AsO 2 −by annealing at 150 °C the 60 K band can be decreased while a 19 K band appears. NaI:AsO 2 −has a band at 11 K. Measured dipole moments of the AsO 2 −centre are between 0.9 and 1.2 e Å depending on the off‐centre displacement of the ionic charge.